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Lru_cache: reusing calculations with bounded storage
functools.lru_cache stores call results by argument values. maxsize limits the retained entries, and the arguments must be hashable.
Published22 Oct 2026
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Technology
Ls-files: identifying paths known to the index
git ls-files can list index entries and other file states depending on its options. It helps distinguish a tracked path from an incidental on-disk copy.
Published22 Oct 2026
Technology
Ls-tree: listing a selected revision’s contents
git ls-tree lists entries in a Git tree, such as HEAD. Recursive mode can include nested paths.
Published22 Oct 2026
Technology
Lzma: compression and container format are separate choices
lzma supports .xz, the older .lzma format and raw compressed streams. These representations are not interchangeable without the appropriate settings.
Published22 Oct 2026
Technology
Map: when the identifier must result in a value
Map stores key-value pairs and remembers the order of addition. set() and get() work with the collection, not with arbitrary properties on the object.
Published22 Oct 2026
Technology
map(): transforming each item in an array
map() creates a new array of results per function. It is appropriate when we want a new value from each input element.
Published22 Oct 2026
Technology
margin-inline follows the logical axis of the text
The beginning and the end do not always coincide with the left and right.
Published22 Oct 2026
Technology
matchAll(): all matches with their groups
The result is an iterator that can be traversed.
Published22 Oct 2026
Technology
Math.ceil(): how many whole packs are needed
Rounding up is appropriate when a partial unit cannot be ordered.
Published22 Oct 2026
Technology
Math.floor(): down means to minus infinity
Cutting the fractional part is a different operation for negative numbers.
Published22 Oct 2026
Technology
Math.hypot(): distance from perpendicular components
The function calculates the root of the sum of the squares.
Published22 Oct 2026
Technology
Math.isclose: nearby numbers under an explicit tolerance
math.isclose() compares numbers using relative and absolute tolerances. For example, math.isclose(0.1 + 0.2, 0.3) is True under the default settings.
Published22 Oct 2026